Toxic iron concentrations in water are extremely unlikely. The NRC makes suggestions instead of mandates because of the variation in results in the studies from which they draw. As you now know, the daily requirement for iron is suggested at 600 mg/day for a mature horse. Too much of one can interfere with the uptake of the other. Do you have an overweight horse? If you grow your own hay, or can discuss this issue with your hay provider, consider increasing the pH of the soil through lime application. It is claimed that excess dietary Fe is causative of horses becoming insulin resistant.Athletic horses, and particularly those in Thoroughbred racing, are often supplemented with Fe in an attempt to improve performance.
Horses in intense exercise may lose as much as 25-30 liters of sweat per day. When it comes to your horse’s health, we believe nature has it right. The effect of current grain feeding practices on hindgut starch fermentation and acidosis in the Australian racing Thoroughbred. Enterocytes regulate iron absorption efficiency, and any more than 2% entering the system is excreted.” (Beard and Dawson, 1997.) To get the true limits, you have to multiply 50 mg of iron by the kilograms of feed the animal eats in a day. Iron is essential for the production of red blood cells. Dr. Getty is the author of the comprehensive resource, The 2005 NRC suggested a maximum tolerable Fe concentration of 500 ppm using data from other species. But even when fed at 1% of bodyweight to a 500 kg horse, these hays will supply an average 1,060 mg to 2,230 mg of iron per day, supplying more than 200% of daily iron requirements in the forage component of the diet alone.Fortified grain concentrates are fed at an average 2.5 kg/horse per day in Australian Thoroughbred racing stables (Richards 2003). Iron can be toxic for your body when consumed in excess.
Without the test results from your horse’s water supply as well as a thorough accounting of your horse’s diet, it is difficult to give a conclusive answer to your question. Studies have shown a direct correlation between iron intake and insulin levels in the blood, making it an important factor in managing the diet for these horses. It works in horses too and can have dramatic effects on IR. It can contaminate your body organs, leading to organ failure. A high iron concentration can interfere with both zinc and copper absorption, making already low levels of these minerals even less available to your horse. I wonder if my horse is getting too much iron from his water.
If your horse is having problems, don’t rule out other possible causes like toxins in the feed or other types of feeds in their diet. Once again from the NRC book, “Iron in feedstuffs and minerals are in the ferric form (Fe+3) and are poorly absorbed in the intestinal tract. Furthermore, forages (pasture, hay, hay pellets or cubes) are already high in iron, making supplementation unnecessary and possibly dangerous. a day of iron. My horses had a hair analysis done in 2004 after Angel foundered, though I remember my vet didn’t put too much stock in it, and I don’t know if it was the same type of test that Uckele does. By eating too much iron, you can develop a condition called hemochromatosis. Iron is essential for the production of red blood cells. "For owners of laminitic horses, get the hay tested for WSC … content–preferably after soaking it–so you know exactly how much your hay contains," Longland recommends. Younger horses and pregnant or lactating mares require the 2.0 to 2.5 parts calcium. The ideal copper to zinc ratio is 1:3. In this article we explain how to easily work out how much is too much.
The requirement of 50 mg/kg of feed (mg/kg is the same as ppm) means that a horse should have 50 mg of iron for every kg of feed. Excessive use of iron supplements is considered to be the primary factor responsible for poisoning in children. I am not sure if its soy in the feed, sugar in the grass, minerals or toxins in the water or soil, iron in the hay, or just too much protein/calories from alfalfa, or a combination. Intensely exercised horses that sweat a lot might have higher requirements than sedentary horses. Nutrient Requirements of Horses: Sixth Revised Edition. At that amount a horse would get 668mg. There are many studies showing the iron content of feeds and it’s easy to take samples of your feeds and have them analyzed for iron content. that say that iron has a relationship with zinc, copper, and manganese. Iron overload in horses is a potentially serious issue and there are countless articles written about excessive iron in equine diets, so it’s understandable that many owners want to know if their horses can get too much iron from Redmond Rock products. Excess body fat leads to elevated insulin. In grasses, the range was from 31 to 1044 mg/kg.
Go deeper than the surface - protect your horse's overall health by assessing the mineral content of the entire diet.She considers nutrition first for the prevention and treatment of disease and disorders, before turning to medical intervention and the use of medications.
Getting the right amount. The 2005 NRC suggested a maximum tolerable Fe concentration of 500 ppm using data from other species.
Iron deficiency anemia is rare and too much iron can potentially lead to laminitis, as well as create an imbalance with other minerals. It’s not unexpected that many horses would be receiving in excess of 500% of their daily iron requirementGiven the dearth of Thoroughbred racehorses that are insulin resistant, despite Fe supplementation in combination with diets that can easily supply amounts beyond requirements, it seems unlikely excess Fe causes insulin resistance. Soaking hay can remove much of the iron, but will also remove other minerals. One more comment: Forages grown from acidic soils will be higher in iron.
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